read

Create a live hardware connection from the MATLAB^® software to the NVIDIA hardware by using the jetson function. To create a live hardware connection object, provide the host name or IP address, user name, and password of the target board. For example:

hwobj = jetson('jetson-board-name','ubuntu','ubuntu');

Create a MATLAB function tx2ModbusClient.m that configures the Jetson TX2 board as a client and connect to the remote server at address '127.0.0.1' and port 502. This function acts as the entry-point for code generation.

function out = tx2ModbusClient(target_func, address, count, val) %#codegen
hwobj = jetson();

% Modbus object creation
m = modbus(hwobj,'127.0.0.1',1478,'Mode','Client');

% Write to target register
write(m, target_func, address, val);
pause(0.1);

% Read from a target register
[out, ~] = read(m, target_func, address, count);
pause(0.1);

% Clear the Modbus object
clear(m);

end

Create a GPU code configuration object for generating an executable. Use the coder.hardware function to create a configuration object for the Jetson platform and assign it to the Hardware property of the code configuration object cfg.

cfg = coder.gpuConfig('exe');
cfg.GenerateReport = true;
cfg.Hardware = coder.hardware('NVIDIA Jetson');
cfg.CustomInclude = fullfile('codegen','exe','tx2ModbusClient','examples');
cfg.CustomSource  = fullfile('codegen','exe','tx2ModbusClient','examples','main.cu');

The main.cu file is generated as part of code generation process. For this example, you can use this file without modification.

To generate CUDA code, use the codegen command and pass the GPU code configuration object along with the tx2ModbusClient entry-point function. After the code generation takes place on the host, the generated files are copied over and built on the target.

codegen -config cfg tx2ModbusClient

Use the runApplication function to launch the executable on the TX2 board.

runApplication(hwobj,'tx2ModbusClient');